senator john mccain speaking moments ago after a closed-door briefing. take a listen. >> we will be introducing this afternoon a resolution that would establish such a select committee and we will urge the senate leadership to act on it as soon as possible. jenna: chief intelligence correspondent catherine herridge continues to follow this story and has more for us now. catherine. >> reporter: thank you, jenna. there are growing calls on capitol hill for either a select committee or special panel to investigate the benghazi scandal. there are three tracks to this investigation. there are the warnings, the requests for security that were denied before the consulate attack. there are the administration's statements that it was a chem station that spun out of control in response to the anti-islam video which conflicted with the available intelligence. and now whether former cia director david petraeus's statements to congress about the attack were in any way impacted by the knowledge he was the focus of an fbi investigation for his affair with biographer pa